fix: fully install go sdk in dev mode

[mattjohnsonpint]

Description

There are three paths that a Modus SDK can be installed via the CLI:

• Explicitly via modus sdk install
• Automatically during modus build
• Automatically during the build phase of modus dev

The first two were correct, but the latter was not installing the modus-go-build tool.

Fixed by:

• reused the install command in modus dev, just like modus build was doing already
• added a check to repair via reinstall if the modus-go-build tool is missing

Checklist

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[linear]

HYP-3296 Modus Go Build tool is not installed

[Copilot]

Pull Request Overview

This PR fixes an issue with the installation of the Go SDK in dev mode by ensuring the modus-go-build tool is correctly installed. The changes include an enhanced check in sdkVersionIsInstalled for the Go build tool, refactoring the dev command to reuse the SDK install command, and updating the changelog.

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
cli/src/util/versioninfo.ts	Adds an extra check for the Go build tool and cleans up incomplete installs
cli/src/commands/dev/index.ts	Refactors SDK installation logic to reuse the shared SDKInstallCommand
CHANGELOG.md	Documents the fix in the changelog